PHP获取一周的日期

function get_week($time = '', $format='Y-m-d'){
    $time = $time != '' ? $time : time();
    //获取当前周几
    $week = date('w', $time);
    $weekname = array('周一','周二','周三','周四','周五','周六','周日');
    //星期日排到末位
    if(empty($week)){
        $week=7;
    }
    $date = [];
    for ($i=0; $i<7; $i++){
        $date_time = date($format ,strtotime( '+' . $i+1-$week .' days', $time));
        $date[$i]['date'] = $date_time;
        $date[$i]['time'] = strtotime($date_time);
        $date[$i]['week'] = $weekname[$i];
    }
    return $date;
}

Array
(
    [0] => Array
        (
            [date] => 2019-06-17
            [time] => 1560700800
            [week] => 周一
        )

    [1] => Array
        (
            [date] => 2019-06-18
            [time] => 1560787200
            [week] => 周二
        )

    [2] => Array
        (
            [date] => 2019-06-19
            [time] => 1560873600
            [week] => 周三
        )

    [3] => Array
        (
            [date] => 2019-06-20
            [time] => 1560960000
            [week] => 周四
        )

    [4] => Array
        (
            [date] => 2019-06-21
            [time] => 1561046400
            [week] => 周五
        )

    [5] => Array
        (
            [date] => 2019-06-22
            [time] => 1561132800
            [week] => 周六
        )

    [6] => Array
        (
            [date] => 2019-06-23
            [time] => 1561219200
            [week] => 周日
        )

)